diff --git a/.changeset/protocol-version-14.md b/.changeset/protocol-version-14.md
new file mode 100644
index 0000000000..cbab8fa0e9
--- /dev/null
+++ b/.changeset/protocol-version-14.md
@@ -0,0 +1,5 @@
+---
+"@objectstack/spec": patch
+---
+
+Sync `PROTOCOL_VERSION` to `14.0.0` — the 14.0.0 release bumped `package.json` but the handshake constant still said 13, so `protocol-version.test.ts` failed on main for every PR. (Process note: the changesets Version PR cannot bump source constants; the protocol bump must accompany each major.)
diff --git a/packages/spec/src/kernel/protocol-version.ts b/packages/spec/src/kernel/protocol-version.ts
index 874d60bfdc..f545bbbe05 100644
--- a/packages/spec/src/kernel/protocol-version.ts
+++ b/packages/spec/src/kernel/protocol-version.ts
@@ -15,7 +15,7 @@
  * Kept in lockstep with the package's own major; `protocol-version.test.ts`
  * asserts it against `package.json` so the two cannot drift.
  */
-export const PROTOCOL_VERSION = '13.0.0';
+export const PROTOCOL_VERSION = '14.0.0';
 
 /** The protocol major as an integer — the value the handshake compares. */
 export const PROTOCOL_MAJOR: number = Number.parseInt(PROTOCOL_VERSION.split('.')[0]!, 10);